/* getopt_long and getopt_long_only entry points for GNU getopt.
   Copyright (C) 1987, 88, 89, 90, 91, 92, 1993
    Free Software Foundation, Inc.
   Copyright (C) 2000, 01, 2002
    Salvador E. Tropea.

   This program is free software; you can redistribute it and/or modify it
   under the terms of the GNU General Public License as published by the
   Free Software Foundation; either version 2, or (at your option) any
   later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */

#include <cl/needs.h>

#ifdef NEEDS_GETOPT

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <cl/getopt.h>

#if !__STDC__ && !defined(const) && IN_GCC
#define const
#endif

#include <stdio.h>

/* Comment out all this code if we are using the GNU C Library, and are not
   actually compiling the library itself.  This code is part of the GNU C
   Library, but also included in many other GNU distributions.  Compiling
   and linking in this code is a waste when using the GNU C library
   (especially if it is a shared library).  Rather than having every GNU
   program understand `configure --with-gnu-libc' and omit the object files,
   it is simpler to just do this in the source for each such file.  */

#if defined (_LIBC) || !defined (__GNU_LIBRARY__)


/* This needs to come after some library #include
   to get __GNU_LIBRARY__ defined.  */
#if defined(__GNU_LIBRARY__) || defined(TVOS_Win32)
#include <stdlib.h>
#else
char *getenv ();
#endif

#ifndef	NULL
#define NULL 0
#endif

int
CLY_getopt_long(int argc, char *const *argv, const char *options,
                const struct CLY_option *long_options, int *opt_index)
{
  return CLY_getopt_internal (argc, argv, options, long_options, opt_index, 0);
}

/* Like getopt_long, but '-' as well as '--' can indicate a long option.
   If an option that starts with '-' (not '--') doesn't match a long option,
   but does match a short option, it is parsed as a short option
   instead.  */

int
CLY_getopt_long_only(int argc, char *const *argv, const char *options,
                     const struct CLY_option *long_options, int *opt_index)
{
  return CLY_getopt_internal (argc, argv, options, long_options, opt_index, 1);
}


#endif	/* _LIBC or not __GNU_LIBRARY__.  */

#ifdef TEST

#include <stdio.h>

int
main (int argc, char **argv)
{
  int c;
  int digit_optind = 0;

  while (1)
    {
      int this_option_optind = CLY_optind ? CLY_optind : 1;
      int option_index = 0;
      static struct CLY_option long_options[] =
      {
	{"add", 1, 0, 0},
	{"append", 0, 0, 0},
	{"delete", 1, 0, 0},
	{"verbose", 0, 0, 0},
	{"create", 0, 0, 0},
	{"file", 1, 0, 0},
	{0, 0, 0, 0}
      };

      c = getopt_long (argc, argv, "abc:d:0123456789",
		       long_options, &option_index);
      if (c == EOF)
	break;

      switch (c)
	{
	case 0:
	  printf ("option %s", long_options[option_index].name);
	  if (CLY_optarg)
	    printf (" with arg %s", CLY_optarg);
	  printf ("\n");
	  break;

	case '0':
	case '1':
	case '2':
	case '3':
	case '4':
	case '5':
	case '6':
	case '7':
	case '8':
	case '9':
	  if (digit_optind != 0 && digit_optind != this_option_optind)
	    printf ("digits occur in two different argv-elements.\n");
	  digit_optind = this_option_optind;
	  printf ("option %c\n", c);
	  break;

	case 'a':
	  printf ("option a\n");
	  break;

	case 'b':
	  printf ("option b\n");
	  break;

	case 'c':
	  printf ("option c with value `%s'\n", CLY_optarg);
	  break;

	case 'd':
	  printf ("option d with value `%s'\n", CLY_optarg);
	  break;

	case '?':
	  break;

	default:
	  printf ("?? getopt returned character code 0%o ??\n", c);
	}
    }

  if (CLY_optind < argc)
    {
      printf ("non-option ARGV-elements: ");
      while (CLY_optind < argc)
	printf ("%s ", argv[CLY_optind++]);
      printf ("\n");
    }

  exit (0);
}

#endif /* TEST */
#endif /* NEEDS_GETOPT */

